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Originally Posted by Ward
Regarding your x50v ROM update. Just use the backup utility and backup programs and settings. Apply the newer ROM, hard reset as usual, then restore. Alright, you may lose functionality in general cases, but not here in this case. Dell hasn't changed all that much - besides, you can do this and simply opt to do the full deed at a later date like I did. I reinstalled clean a few days ago - feels no different to after I restored following the update.
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Exactly the case with the Pocket Loox 720 upgrade. Much as there indeed is some difference in the registry between the two ROM versions, not updating the registry to the new version after a restore (which involves a full registry restore too, also meaning setting back the registry to its pre-upgrade state) doesn't have any consequences.
Naturally, other ROM upgrades may have more effect on the registry. These two, however, work without any additional post-restoration registry updating.
Bottom line: even without any official support for easy ROM upgrades, there may be cases when it's very easy to upgrade the ROM
and restore backups made with the previous ROM version.